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EN 1.4749 Stainless Steel vs. AISI 304LN Stainless Steel

Both EN 1.4749 stainless steel and AISI 304LN stainless steel are iron alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4749 stainless steel and the bottom bar is AISI 304LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16
7.8 to 46
Fatigue Strength, MPa 190
200 to 440
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 370
400 to 680
Tensile Strength: Ultimate (UTS), MPa 600
580 to 1160
Tensile Strength: Yield (Proof), MPa 320
230 to 870

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 9.6
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.1
Embodied Energy, MJ/kg 36
44
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 31
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
83 to 270
Resilience: Unit (Modulus of Resilience), kJ/m3 250
140 to 1900
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 22
21 to 41
Strength to Weight: Bending, points 21
20 to 31
Thermal Diffusivity, mm2/s 4.6
4.0
Thermal Shock Resistance, points 22
13 to 26

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.030
Chromium (Cr), % 26 to 29
18 to 20
Iron (Fe), % 68.5 to 73.7
65 to 73.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 0
8.0 to 12
Nitrogen (N), % 0.15 to 0.25
0.1 to 0.16
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030